the newline part seems not to work, because it is triggered for

https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/SecurePoll/+/refs/heads/master/includes/Pages/CreatePage.php#320

				$formItems['election_type']['options-messages']
				["securepoll-create-option-election_type-$type"] = $type;
which is not a good break for the statement, but autofix only removes the indent, not the newline, but removing the newline seems not better and can produce a LineLength warning

Tabs are replaced from codesniffer and 'content' does not longer contains tabs and that could be the reason why the condition with the rtrim does not work here. There is no test for that part. The newline whitespace is a own token to track the correct line number inside the token stack.